The United States embassy in Saudi Arabia urged its citizens Wednesday to step up their security awareness because of the continued risk of terrorist attacks by groups linked to Osama bin Laden’s al-Qaeda network.

The warning called on Americans to vary their movements about town and personal routines.

"US citizens and interests remain at increased risk of terrorist attacks by groups with links to Osama bin Laden's al-Qaeda organization," said a new warden's message distributed to all Americans living in Saudi Arabia.

"As security around US official facilities has increased, terrorists are seeking softer, less secure targets. These may include individual Americans as well as locations where numbers of American citizens are located, such as housing compounds," the message warned.

Additionally, the message, posted on the American embassy website, advised Americans that "suspicious individuals and vehicles should be reported immediately to local police officials." (Albawaba.com)